Use the control bar in GarageBand for iPhone
The control bar is located at the top of the screen. It includes controls that let you navigate to different parts of GarageBand; control playback, recording, and volume; and open the Loop Browser, Tracks view, and song settings.
The navigation buttons on the left include:
The Navigation button gives you quick access to the My Songs browser and the sounds for the selected Touch Instrument.
The Tracks View button lets you switch between the current Touch Instrument and Tracks view. The Tracks View button is available after you make the first Touch Instrument recording in Tracks view.
The Grid button lets you switch between the current Touch Instrument and the Live Loops grid. The Grid button only appears if a Live Loops grid has been created for the song.
The Track Controls button opens the Track Controls for the currently selected track.
On iPhone SE, iPhone 8, iPhone 7, or iPhone 6s, you can access the Track Controls when you tap the Settings button .
The FX button shows or hides the Remix FX controls.
The controls for playing the song (called transport controls) in the center include:
The Go to Beginning button moves the playhead to the beginning of the song. While the song is playing, the Go to Beginning button changes to a Stop button.
The Play button starts the song playing, or stops it if it's currently playing.
The Record button starts recording. To stop recording and stop the playhead, tap the Play button.
The Metronome button starts and stops the metronome click.
The Undo button appears after you record a Touch Instrument or make changes in Tracks view. Tap it to undo your previous edits.
The buttons on the right include:
The Controls button shows or hides the controls area for the current Touch Instrument.
The Loop Browser button opens the Loop Browser, where you can find and preview loops to add to your song. The Loop Browser button is available only in Tracks view.
The Settings button lets you view and edit song settings, including metronome, tempo, and key signature settings.
On iPhone SE, iPhone 8, iPhone 7, or iPhone 6s, you can open Track Controls and Song Settings from the Settings button.